WESTMINSTER, Co. (KUSA) - Investigators say a cross recovered during the Jessica Ridgeway investigation could become a key piece of evidence in locating her killer.

Police released several pictures of a wooden cross and asked the public for information about anyone seen with such cross or business that sells it.

Police Friday did not say where the 1-1/2 inch-by-1-inch cross with an offset horizontal bar was found or why it might be associated with the case.

The cross has a hole drilled through the upper part and could be worn on a necklace.

On one side of the cross are three vertical bars etched onto the shorter horizontal section and a zig-zag pattern is carved onto the opposite side.

Police believe there may be a connection between the Jessica Ridgeway murder and the attempted abduction at Ketner Lake, and urge the public to specifically look for someone with a cross like this that matches the suspect's description from Ketner Lake.

Police are asking the community to look through the pictures and call their tip line or send them an email with information that may identify the killer or where he may have got the cross from.